class Dog:

    species = "Class feild"

    def __init__(self, name, age):
        self.name = name
        self.age = age

    def print(self):
        print(self.name + "," + str(self.age))


if __name__ == "__main__":
    d1 = Dog("Buddy", 3)
    d2 = Dog("Mix", 4)

    print(d1.species)

    print(Dog.species)

    print(d2.species)

    Dog.species = "fixed"

    print(d1.species)
    print(d2.species)

    d1.print()
